Answer: Juliet is less mature than Romeo when it comes to her being so young and naive that she does not know how to control her feelings. And Romeo is less mature than Juliet when it comes to him being spontaneous after being blinded by love.
Step-by-step explanation:
In the start of the play Juliet is introduced as a young, innocent girl, but ends up as a woman in love with an opinion of her own, and is emotionally mature. Juliet goes through several stages of being a child, being in love, becoming a wife, being deceived and being a widow in a short space of time.